Third-party add-ins are helpful… until they’re not. Outdated or conflicting ones can mess with Outlook’s core performance, causing unexpected slowdowns or outright failure to launch. Create your account and connect with a world of communities.

Now, let us move into the solutions to fix the issue of MS Outlook. Position your company at the center of the tech conversation with spotlight articles, executive interviews, and monthly roundup opportunities. Connect with key decision‑makers, build trust, and expand your brand’s authority across the B2B tech space. Save the repaired file to PST, MSG, EML, PDF, HTML or export directly to Office 365. This should get you back to business promptly. Select the corrupted PST or OST using the file picker.

Auto-archive, sending and receiving a very large attachment, or running some of the other mailbox tools can all be done in the background. Check the status bar at the bottom of the screen to see if another step-by-step Outlook troubleshooting process is running. If so, wait a short time (usually two or three minutes) to see if Outlook starts working again.

How to Repair Outlook 2019-2016Select 'Start' menu and go to 'Control Panel'Click on 'Programs' and then select 'Programs & Features'Find and select 'Microsoft Office 2016' from the enlisted programs.Click on 'Change' option.Next, click on 'Quick Repair' or 'Online Repair' and follow instructions.Jan 13, 2025

If it does and Outlook starts working properly, then most likely the problem is with one of your add-ins, which leads us to the next step. The browser version isn’t impacted by local Outlook files or add-ins. When opening certain messages, Outlook might be loading content from the internet. This can result in delays or even a full Outlook freeze on slower connections. Outlook freezing or becoming unresponsive isn’t just frustrating—it can derail your entire day.

If you have a large number of items in any single folder, you may experience performance issues during certain operations. For more information, see Outlook performance issues when there are too many items or folders in a cached mode .ost or .pst file. An out-of-date antivirus program may sometimes cause errors when you try to start Outlook as there may be compatibility issues between your antivirus program and Outlook.

We have mentioned all manual troubleshooting solutions that you can try one by one. However, before that, you must figure out the real cause of the issue. Later, go for the best solution that suits the cause of the Outlook issue. Additionally, if the issue causes PST file corruption, use the suggested software for better results.

There are quite a few different causes for this, but one of the most common is a defective add-in. Here’s how to disable add-ins in Outlook even when it keeps crashing. If Outlook Desktop fails to connect, try these steps before escalating the issue to the ET&S Help Desk.

Start classic Outlook in safe modeIn Windows 10, click Start.Type Outlook /safe, in the Search programs and files and then click OK.Close and re-open Outlook.If the issue is resolved, you can keep working, or if you have time, take the following steps to find out what COM Add-in is causing the problem.

Upgrade to Microsoft Edge to step-by-step Outlook troubleshooting take advantage of the latest features, security updates, and technical support. There are multiple ways for you to send and receive email, and multiple versions of Outlook available. If the images in these topics don't match what you see on your screen, you might be using a different version of Outlook. Occasionally, classic Outlook tries to run a process in the background.

When you install Outlook, an Inbox repair tool (scanpst.exe) is also installed on your PC. The Inbox repair tool can resolve problems by scanning your Outlook data files, and repairing errors. To use the Inbox repair tool, exit Outlook, and then follow the steps in Repair Outlook Data Files (.pst and .ost). In the first place, check whether your antivirus is up-to-date. If the above does not help, turn off the antivirus and step-by-step Outlook troubleshooting see if it brings Outlook back to life.

For a closer look at its functionalities, users can download and try its free trial version in their system. If you are dealing with a broken Outlook, then it doesn’t always mean you need to call tech support or start over from scratch. With the right steps, you can repair Outlook manually and get back to work in no time. You should start with the easy fixes, like repairing Office or turning off add-ins.

Launch the recovery assistant if you've tried everything else and Outlook is still crashing. It also allows you to upload your results to Microsoft for review by a support engineer. Perfectly repair and recover corrupted Outlook PST & OST files. Corrupted or badly set-up Outlook profiles can often cause start-up problems. The app might refuse to launch or crash at the splash screen. The PST files will be repaired and the error will be resolved.